Dreaming of dust symbolizes the loss or burial of an emotion or a past. It is usually related to gains and losses in the dreamer's life experience. It could be someone important in your life, or it could be an emotion, a precious object. It reflects your inner loss, endless sadness, helpless forgetting and other emotions.

Dreaming of a lot of dust can benefit you.

If you dream of loess falling into the door of the house from the sky, you will be lucky.